body {
  text-align: center;
}

#title {
  text-align: center;
  font-size: 50px;
  margin-bottom: 20px;
}

#calendar {
  width: 346px;
  height: 458px;
  background-color: #cccccc;
  margin: 0px auto;
}

ul {
  padding: 0px;
  margin: 0px;
  font-size: 0px;
}

li {
  width: 100px;
  height: 100px;
  list-style: none;
  display: inline-block;
  border: 1px solid #000000;
  text-align: center;
  line-height: 100px;
  font-size: 40px;
  margin-left: 10px;
  margin-top: 10px;
  color: #ffffff;
}

a {

}